Winding machine



7 Oct. 30, 1928.

J. c. HENNY ET AL.

WINDING MACHINE Filed July 3, 1926 INVENTOBS RAYMOND H. CB4MEB, JACOB c. HENNY,

77-1 //2 ATTO/QNE Patented Oct. 30, 1928,

UNITED STATES OFFICE JAco's'cj xn-mw, or Eamon-mien; aim RAYMOND H. CRAMER, or NEWARK. NEW unasnxassmnonsmo GENERALMOTORSCORPORAT1ON,"OF DETROIT, MICHIGAN,

A COBPQRATION or DELAWARE;

wINnI NG' MACHINE,

/ Application filed July 3,

T'Ihislinvention relates to coil winding machines and comprises all the features of novelty herein disclosed, by way of example, as embodied in a. machine for Winding a strip ofmaterial into thetiormof a helix.

An object of the invention is tov provide an improved machine for winding strip material into a continuous helical coil of small diameter and unlimited length; Anotherob- .je ct is to provide an inexpensiveand efficient machine ofthis character whichis readily adaptable to the making of coils of difierentsizes, both as to internal and external diameters and as to wallthic'kness.

which is adapted to handle tough material. such as strip steel and make it into accurately formed hollow coils such asare used [roller bearings. f

To these ends and to improve generally upon machines of this generalcharacter, the invention also consists in the Various mat ters hereinafter described and claimed.

In the drawings, Figure '1 is a central longitudinal section of the machine, with some parts broken away.- 5 Figure 2 is a side View, partly in section,

of'a coil being wound. r v

Figure 3 is a perspective View offthe'slide and saddle. i y I Figure 4 is a perspective view of a detail.

In general, the machine operates to feed a strip of material of substantially ;rectangular cross section endwisebetween two cones to form a coil which gradually decreases in size until; the desired diameter reached. The numeral. indicates a frame having bearings 12' and 14 for a rotatable shaft 1G. An end thrust ball bearing 18 is interposed between a collar 20 onthe shaft and the bearingM to take the thrust produced in one direction by' the coiling operato receive an internally threaded holder'Qi carrying a conemember formed in large and small sections 26 and 28, respectively, the

section is hardened and"" is deta'chably clamped to the larger section'hy a" rod 32 extending through a central bore in the tension 50' The opposing cone faces are fothem different interior diameter.

The end of the shaft is threaded at 22 1925. Serial No. 120,469.

slotA-6 through wh'ich smp S of Windable ,material is fed. Still another object is to provide amachine I In concentric relation to the inner cone member is an outer cone member 48 having an inner conical face and a cylindrical exunilfor'mly spaced throughout and so are'the cylindrical extensions and 50. The outer coiiemember is removably mounted in a re cess of air'ota'table holder 5-1 and outer cone sections of different interior diameter may be inserted n the recess as occasion arises. jThe'conica'l' face of the cone member 48 is substantially a continu. ion of the short coaical face 42 0f the strip-guiding plate which is at the larger end of the cone and stationary, being keyed to the sh eld 36. 'lhis g'uiding plate is also replaceable by Betweenaflangeeti on the holder and 51V slide orcarrier 58-is interposed a ball, thrust bearmg 60 to take fend thrust occasioned by the strcnggtendenc'v of the cone n'icinbers to separate axially during winding of a strip.

Theslid'e or carrier-has a bore 62 acting as a j'ournalfor the rotatable holder 54: which has an opening 64 in line with the axis of the cones to allow the formed coil to feed out axially. i

'T he slide 5813 adjustable in a direction.

parallel to the axis of the cones to regulate the space between the cones which space determines the wall thickness of thdforined The slide has lateral extensions provided withways 68 that are slidable in gi'i'i'des 70 at'the sides of a saddle 72 which secured tothe main frame. The slide alsohasfa depending bored extension 74 whicli" is guided on a shaft iournalled aboss of the saddle 7 Qan'd'in bearings 84 and 86 of the main frame. The shaft 78 is driven by a gear 88 from a gear 90 on the driving shaft 16. The holder 54 is ro tated b a rin ear 92 from a gear 9% on the v end of shaft 78. These are wide gears which will effect driving connection in different positions of the slide and they are readily removable from the shaft and from an extension 96 of the holder so that gears having another teeth ratio can be substituted. The gear ratio is ordinarily such, that the holder 5 land outer cone member will rotate about three times as fast as the inner cone'member butthis depends on the nature of the material, size of coil, etc. To move the slide, it is provided witha rack 98 fastened to its under side and operated by a pinion 100 on a short shaft 102 journalled in a. lug 104 at one side of the saddle 72. The slide is removable endwise from the saddle to secure access to the cones and, when put back in adjusted position, is held by clamping plates 106, one of which is omitted in Figure 3 forclearness.

I In operation, a single helical turn is made in a strip S of material by Wrapping it around the base of the cone member 26 When the outer conemember 48 is displaced to theright inFigure 1. This turn can be readily made by a hand tool because there is little resistance to bending a coil of large diameter as compared to one of small diameter. This initial coil is then placed in the guiding plate 420 with the unwound part of the coil extending through the slot 46. The outer cone member is then adjusted to the proper distance from the inner one and the cone members are rotated, the outer one at a greater speed. This pulls the material enclwise around-the inner cone member and ahelical coil of small diameter is very great 1 compared to this Winding of a large coil that is gradually decreased in size. The coils 'jQIOClllCGCl by this machine are more uniform and accurate and when out up make better bearing rollers than'those produced by the other method. The material can be wound either right handed. or left handed by changing the direction of rotation of the cones and changing the gi'nde'plate 40.

Although the invention has been described by reference to a partlcular construction, it

" is not, in its broader aspects, necessarily limited to the form selected for mere illustrative I I an inner cone member having an external conical face, an outer'cone member having an internal conicalface surrounding the inner conical face, and means for causing a strip of material to be fed spirally between and'in contact, with said conical faces to form a coil of gradually decreasing diameter, substantially as described.

2. In a machine of the character described, an inner cone member having anexternal conical face, an outer cone member having an internal conical face surrounding and uni formly spaced from the inner conical face, and means for causing a relative movement of rotation between said cone members to form a. strip of material into a coil; substantially as described.

In a machine of thecharacter described,

an inner cone member having an'ext-ernal' conical face, an outer conemember having an internal conical face surrounding and uniformly spaced from the inner conical face, means for rotating the inner cone member, and means for rotating the outer cone member at a faster speed than the inner cone member; substantially as described.

' 4. In a machine of the character described, an inner cone member havingan external conicalface, an outer cone member having an internal conical face surrounding and uniformly spaced from the inner conical face, a plate surrounding said inner cone member, said plate having a helical face and an intersecting conical face at the entrance to the space between said cone members, and means for rotating one of said cone members; substantially as described,

conical face, .an outer cone member having an internal conical face surrounding and uniformly spaced from the inner conical face,'a plate surrounding said inner cone.

member, said plate having ahelical face at the entrance to the space between said-cone members, and means for rotating one of said cone members; substantially as" described.

6'. In a machine of the character described, a cone member having an internal conical face, a member'within said cone member for sizing the interior of a coil formed therein, and means for-rotating sa d cone member; substant1ally as described.

1 7. In a machine ofthe character described, it

cone memberfhaving an internal conical face, a plate having a helical face at the entrance to the larger end of saidcone memher, and means for rotatingsaidcone member; substantially as described.

8. In a machine ofthe jcharacterdescribed, a cone member havingan lnterna-l conical o. In a machine of thecharacfter' described, an inner cone member having an external l to face, a plate having a helical face'and an intersecting conical face at the entrance to the larger end of the cone member, and means for rotating said member; substantially as described.

9. In a machine of the character described,

a conemember having an external conical face, and means surrounding the conical face for feeding a strip of material around and along said conical face to form a coil of small diameter; substantially as described.

10. In a machine of the character described, a cone member having an external conical face, a. plate surrounding said conical face and having a helical face substantially normal. to the axis of the cone member, and means surrounding the conical face for feeding a strip of material aroundand along said conical face to form a coil'of small diameter substantially as described.

11. In a machine of the character described, an inner cone member having an external conical face with a cylindrical extension, an outer cone member having an internal conical face with a cylindrical extension, and means for feeding a strip of material'around and between said cone members to form a coil of small diameter; substantially as described. I

12, In a machine of the character de scribed, an inner cone member having an external conical facewith a cylindrical extension, an outer cone member having an internal conical face with'a cylindrical. extension, a plate surrounding said inner cone member and having a guiding face at the larger end of said outer conemember, and

meansfor causing a relative movement of rotation between said cone members to form a strip of material into a coil; substantially as described.

13. In a machine of the character described, an inner cone member having an external conical face, an outer cone member having an internal conical face, aholder for one of said cone members, and means for adjusting the holder parallel to the axis of said cone members; substantially as described.

14. In a machine of the character described, an inner cone member'having an external conical face, an outer cone member having an internal conicalface with a cylindrical extension, and a holder for said outer cone member adapted to receive outer cone members of different sizes, and means for adjusting the holder parallel to the axis of the cone member; substantially asdescribed.

15. In a machine of the character de scribed, an inner cone member havingan external conical face with acyhndrical extension, an outer cone member having an' internal conical face, said inner cone memher being in two sections and the larger section being adapted to receive smallersections of different sizes, and means for causing a relative adjusting movement between said cone members in a direction parallel to their axes; substantially as described. I

16. In a machine of the character described, an inner cone member having an ex ternal conical face, an outer cone member having an internal conical face, said inner cone member being formed in sections, the smaller section having a cylindrical extension, and means for detachably securing the smaller section to the larger section; substantially as described.

17. In a machine of the character described, an inner cone member having an external conical face with a cylindrical extension, an outer cone member having an internal conical face with acylindrical extension,

said inner cone member being formed in sections, the larger section being adapted to receive smaller sections of diflerentsizes, a holder for said outer cone member, said holder being adapted to receive outer cone members of different sizes, and means for adjusting the holder parallel to the axis of the cone members; substantially as described.

18. In a machine of the character de scribed, an inner cone member having an external conical face, an outer cone member having an internal conical'face concentr 3' with the conical face of the inner-cone mem ber, a holder for the outer cone member, said holder having a bore inalignment with the 'axis'of the cone members, and means for rotating said holder; substantially as described.

In testimony whereof we hereunto allix our signatures.

JAcoB c. HENNY. RAYMOND n. cranes. 

